fix!: adjust brushes opacities

[Darsh0307]

GitHub Issue: close https://github.com/unoplatform/Uno.Themes/issues/1236

PR Type

What kind of change does this PR introduce?

• [x] Documentation content changes

Description

Replacing the DisabledLow opacity with Disabled

PR Checklist

Please check if your PR fulfills the following requirements:

• Commits must be following the Conventional Commits specification
• [ ] Tested the changes where applicable:
  • [ ] UWP
  • [ ] iOS
  • [ ] Android
  • [ ] WASM
  • [ ] MacOS
• [] Updated the documentation as needed:
  • [x] General Doc Update
  • [ ] material-controls-styles.md
  • [ ] cupertino-controls-styles.md
  • [ ] lightweight-styling.md (LightWeight Styling Resource Keys)
• [x] Contains No breaking changes

  If the pull request contains breaking changes, commit message must contain a detailed description of the action to take for the consumer of this library. As explained by the Conventional Commits specification

Other information

Internal Issue (If applicable):

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[Darsh0307]

@Xiaoy312 I did checked the commit message accordingly.

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All committers have signed the CLA.

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Azure Static Web Apps: Your stage site is ready! Visit it here: https://salmon-rock-0cfebe70f-1261.eastus2.azurestaticapps.net

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[Xiaoy312]

to be replaced by #1369

[agneszitte]

Closing this PR as the changes were done in https://github.com/unoplatform/Uno.Themes/pull/1369